116213217891 has 8 divisors (see below), whose sum is σ = 155090682960. Its totient is φ = 77405615712.

The previous prime is 116213217871. The next prime is 116213217893. The reversal of 116213217891 is 198712312611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 116213217891 - 2¹⁹ = 116212693603 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (116213217893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17461840 + ... + 17468493.

It is an arithmetic number, because the mean of its divisors is an integer number (19386335370).

Almost surely, 2^116213217891 is an apocalyptic number.

116213217891 is a deficient number, since it is larger than the sum of its proper divisors (38877465069).

116213217891 is a wasteful number, since it uses less digits than its factorization.

116213217891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34931445.

The product of its digits is 36288, while the sum is 42.

The spelling of 116213217891 in words is "one hundred sixteen billion, two hundred thirteen million, two hundred seventeen thousand, eight hundred ninety-one".